DE3681673D1 - Apparat und verfahren zur anfaenglichen erfassung der niedrigeren, meist bedeutsamen, raeumlichen frequenzdaten bei der bilderzeugung mittels magnetischer kernresonanz. - Google Patents
Apparat und verfahren zur anfaenglichen erfassung der niedrigeren, meist bedeutsamen, raeumlichen frequenzdaten bei der bilderzeugung mittels magnetischer kernresonanz.Info
- Publication number
- DE3681673D1 DE3681673D1 DE8686112618T DE3681673T DE3681673D1 DE 3681673 D1 DE3681673 D1 DE 3681673D1 DE 8686112618 T DE8686112618 T DE 8686112618T DE 3681673 T DE3681673 T DE 3681673T DE 3681673 D1 DE3681673 D1 DE 3681673D1
- Authority
- DE
- Germany
- Prior art keywords
- image
- image data
- data acquisition
- spacious
- important
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/4818—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space
- G01R33/482—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a Cartesian trajectory
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/4818—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space
- G01R33/4824—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a non-Cartesian trajectory
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/56509—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to motion, displacement or flow, e.g. gradient moment nulling
Landscapes
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/781,735 US4721912A (en) | 1985-09-30 | 1985-09-30 | Apparatus and method for initially capturing most significant low spatial frequency NMR imaging data |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3681673D1 true DE3681673D1 (de) | 1991-10-31 |
Family
ID=25123742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686112618T Expired - Lifetime DE3681673D1 (de) | 1985-09-30 | 1986-09-12 | Apparat und verfahren zur anfaenglichen erfassung der niedrigeren, meist bedeutsamen, raeumlichen frequenzdaten bei der bilderzeugung mittels magnetischer kernresonanz. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4721912A (de) |
EP (1) | EP0217196B1 (de) |
JP (1) | JPS62129040A (de) |
AT (1) | ATE67863T1 (de) |
DE (1) | DE3681673D1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63109847A (ja) * | 1986-10-29 | 1988-05-14 | 株式会社日立メデイコ | 核磁気共鳴映像装置 |
DE3701849A1 (de) * | 1987-01-23 | 1988-08-04 | Philips Patentverwaltung | Verfahren und vorrichtung fuer die kernspintomographie |
US4800494A (en) * | 1987-03-23 | 1989-01-24 | Varian Associates, Inc. | Method and apparatus for execution of multislice imaging experiments |
FR2616936B1 (fr) * | 1987-06-19 | 1989-10-13 | Thomson Cgr | Procede de prise en compte, dans une image, des mouvements d'un objet |
US4830012A (en) * | 1987-08-14 | 1989-05-16 | Duke University | High speed NMR imaging method and apparatus |
JP2960419B2 (ja) * | 1988-08-10 | 1999-10-06 | 株式会社日立製作所 | 磁気共鳴イメージング方法 |
US5073752A (en) * | 1990-04-19 | 1991-12-17 | Picker International, Inc. | Discrete fourier transform imaging |
GB9025344D0 (en) * | 1990-11-21 | 1991-01-02 | Marconi Gec Ltd | Nuclear magnetic resonance methods and apparatus |
DE4142726C2 (de) * | 1991-12-21 | 1993-10-07 | Bruker Medizintech | Verfahren zur Beobachtung von zeitlichen Veränderungen der Signalintensitäten eines Kernspintomographie-Bildes |
IL100530A (en) * | 1991-12-26 | 1996-05-14 | Elscint Ltd | Evolving image |
JPH0661734U (ja) * | 1991-12-27 | 1994-08-30 | 達明 大西 | ガス缶 |
US6025714A (en) * | 1997-04-25 | 2000-02-15 | Toshiba America Mri, Inc. | Magnetic resonance imaging (MRI) using fast spin echo (FSE) imaging process |
WO2005093451A1 (en) * | 2004-03-26 | 2005-10-06 | Koninklijke Philips Electronics N.V. | Non-expert control of an mr system |
US8655348B2 (en) | 2011-02-18 | 2014-02-18 | Pctel, Inc. | System and method for acquiring network data |
DE102014220328B3 (de) * | 2014-10-07 | 2015-08-27 | Sirona Dental Systems Gmbh | Erstellung einer MRT-Aufnahme |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4471305A (en) * | 1978-07-20 | 1984-09-11 | The Regents Of The University Of Calif. | Method and apparatus for rapid NMR imaging of nuclear parameters with an object |
US4297637A (en) * | 1978-07-20 | 1981-10-27 | The Regents Of The University Of California | Method and apparatus for mapping lines of nuclear density within an object using nuclear magnetic resonance |
US4318043A (en) * | 1978-07-20 | 1982-03-02 | The Regents Of The University Of California | Method and apparatus for rapid NMR imaging of nuclear densities within an object |
JPS5838539A (ja) * | 1981-08-31 | 1983-03-07 | 株式会社東芝 | 診断用核磁気共鳴装置 |
JPS59177028A (ja) * | 1983-03-29 | 1984-10-06 | 株式会社島津製作所 | Nmr断層像撮影方法 |
US4549140A (en) * | 1983-06-03 | 1985-10-22 | General Electric Company | Method utilizing combined, interleaved pulse sequences for reducing motion artifacts in computed T1,T2 and M0 NMR imaging |
US4581581A (en) * | 1983-06-30 | 1986-04-08 | General Electric Company | Method of projection reconstruction imaging with reduced sensitivity to motion-related artifacts |
GB8320653D0 (en) * | 1983-08-01 | 1983-09-01 | Eastwood L M | Producing images by nmr techniques |
JPS6099240A (ja) * | 1983-11-04 | 1985-06-03 | 横河メディカルシステム株式会社 | 計算機トモグラフイ装置 |
US4614195A (en) * | 1984-12-18 | 1986-09-30 | General Electric Company | Method for reduction of motion artifacts in Fourier transform NMR imaging techniques |
US4684891A (en) * | 1985-07-31 | 1987-08-04 | The Regents Of The University Of California | Rapid magnetic resonance imaging using multiple phase encoded spin echoes in each of plural measurement cycles |
US4706026A (en) * | 1985-08-16 | 1987-11-10 | General Electric Company | Method for reducing image artifacts due to periodic signal variations in NMR imaging |
US4663591A (en) * | 1985-08-16 | 1987-05-05 | General Electric Company | Method for reducing image artifacts due to periodic signal variations in NMR imaging |
-
1985
- 1985-09-30 US US06/781,735 patent/US4721912A/en not_active Expired - Lifetime
-
1986
- 1986-09-12 DE DE8686112618T patent/DE3681673D1/de not_active Expired - Lifetime
- 1986-09-12 AT AT86112618T patent/ATE67863T1/de not_active IP Right Cessation
- 1986-09-12 EP EP86112618A patent/EP0217196B1/de not_active Expired
- 1986-09-30 JP JP61230208A patent/JPS62129040A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
EP0217196B1 (de) | 1991-09-25 |
ATE67863T1 (de) | 1991-10-15 |
JPH0457339B2 (de) | 1992-09-11 |
EP0217196A2 (de) | 1987-04-08 |
EP0217196A3 (en) | 1989-01-18 |
JPS62129040A (ja) | 1987-06-11 |
US4721912A (en) | 1988-01-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |